Not to be so professional and just for the recording of every running exercise in Leiden I chose the plain and runner-designed Garmin forerunner 245. Plenty of choice at Garmin Garmin is working hard in the field of wearables. In recent years, the American company has successfully shifted its focus from navigation boxes for the car to GPS-based sports watches and bicycle computers. In the first quarter of this year, Garmin was number three worldwide in terms of numbers of smartwatches sold, with only Samsung and Apple to tolerate.

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Since I’m here I couldn’t count that how many times people asking me ‘how are you’ and I actually don’t know how to response this due to the difference of the greeting ways. Today I came across Grace in the corridor of our apartment building. Again I was asking ‘How are you?’ It could be simple as a normal greeting way here but I just not be adapted to it. At the hometown we just say people’s name if he/she is an acquaintance.

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‘Leaf lettuce, head lettuce, green lettuce, red lettuce….who knew there were so many kinds of lettuce? This is your handy guide to knowing what kind of lettuce your are eating with.’ Types of Lettuce Iceberg Butterhead Romaine Leaf Kale ICEBERG LETTUCE This is probably the most famous and recognizable form of head lettuce. Iceberg lettuce is also sometimes referred to as crisphead, and it is a pale green leafy vegetable that forms into a tight cabbage style head.

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Interesting warnings These kits are only designed for human use. Use a separate test kit for each person. You can only use each item in the test kit once. Do not re-use the items. Do not eat or drink for at least 30 minutes before doing the test to reduce the risk of spoiling the test. What you need to do Prepare your test area and check your test kit contents Set up your test Take your swab sample Process the swab sample Read your result Report your result Safely dispose of your test kit Store the test kit at room temperature or in a cool dry place (2°C

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Author's picture

Kai Li (李锴)

PhD candidate of Environmental Sciences, Leiden University

Leiden University

the Netherlands